Pivoting device for turbine housings of open-end spinning machines

ABSTRACT

An open-end spinning machine in which the turbine housing is by means of a control lever and a crank drive operatively connected to the control lever movable along a straight path in the axial direction of the turbine housing and is provided with locking means reponsive to a predetermined stroke of the turbine housing along said straight path to lock the control lever to the turbine housing and the crank drive whereupon the turbine housing is by means of the control lever pivotable about a pivot shaft extending in the longitudinal direction of the machine, for yielding easy access to the interior of the turbine housing.

Unite it; States atent i 1 Wachendorf et a1.

[ June 111, 1974 Inventors:

Assignee:

Filed:

App]. No.:

Friedrich Wachendori, Eggestedt; Rolf Welding, Bremen, both of GermanyFried. Krupp Gesellschaft rnit beschrankter Haltung, Essen, Germany July9, 1973 Foreign Application Priority Data July 20, 1972 US. Cl 57/58.89,57/5895, 57/89 Int. Cl D0lh 1/12 Field of Search 57/5889, 58.95, 88, 89

References Cited UNITED STATES PATENTS Germany 2235474 Bures et al57/5891 Bures et al 57/5891 Primary Examiner-John Petrakes Attorney,Agent, or Firm-Walter Becker 5% ABSTRACT An open'end spinning machine inwhich the turbine housing is by means of a control lever and a crankdrive operatively connected to the: control lever movable along astraight path in the axial direction of the turbine housing and isprovided with locking means reponsive to a predetermined stroke of theturbine housing along said straight path to lock the control lever tothe turbine housing and the crank drive whereupon the turbine housing isby means of the control lever pivotable about a pivot shaft extending inthe longitudinal direction of the machine, for yielding easy access tothe interior of the turbine housing.

6 Claims, 3 Drawing Figures PATEHTEBJUM 1 #914 sum 20F 3 PIVOTING DEVICEFOR TURBINE HOUSINGS OF OPEN-END SPINNING MACHINES The present inventionrelates to a pivoting system for turbine housings of open-end spinningmachines in which the turbine housing with the spinning turbine mountedtherein is pivotable about a horizontal pivot axis extending parallel tothe machine front from its substantially vertical position of operation,in which the turbine housing is in upward direction adjacent to thehousing for the opening-up roller, and in which the opening-up rollerwhich is coaxially arranged with regard to the spinning turbine extendsfrom above into the spinning turbine.

According to a heretofore known pivot system, the turbine housing ispivotable about a pivot axis in downward and rearward direction whichpivot axis is located behind the spinning turbine at the level of theopeningup roller. The pivot angle is limited to 30 because the turbinehousing would otherwise hit the withdrawaldelivery system which, in viewof the fact that the overall height of the open-end spinning machine isto be held low, follows the spinning turbine at a slight distancerelative thereto.

The heretofore known pivot system is simple inasmuch as the'removal ofthe spinning turbine from the opening-up roller extending thereinto iseffected during the first phase of the pivot movement. However, thepivot angleis merely sufficient to clean the opening-up roller or toexchange the same. On the other hand, the necessary accessibility for aquick cleaning of the spinning turbine itself and for a fast exchange ofthe spinning turbine together with the bearing means therefor is lackingwith this pivot system. If it is desired to exchange the spinningturbine or quickly to clean the same, the entire turbine housing has tobe removed from the machine which requires considerable time and work.This drawback is also inherent in various other attempts of solving theproblem involved.

It is, therefore, an object of the present invention to provide a pivotsystem for turbine housings of open-end spinning machines which willmake it possible in a simple manner quickly to clean the spinningturbine and to exchange the spinning turbine with the bearing meanswhenever necessary.

This object and other objects and advantages of the invention willappear more clearly from the following Specification in connection withthe accompanying drawings, in which: FIG. 1 illustrates in side view andpartly in section a turbine housing of an open-end spinning machine witha pivot system according to the invention; FlGsl showing the turbinehousing in its position of operation.

FIG 2 is a simplified rear view of FIG. 1 as seen in the direction ofthe arrow II, but on a considerably larger scale than that of FIG. 1.

FIG. 3 is a side view similar to that of 'FIG. 1 with the turbinehousing likewise seen in side view and dis placed axially downwardlyinto a position from which it is subsequently pivoted into the dot-dashposition.

The pivot system according to the present invention is characterizedprimarily in that the turbine housing which is pivotable out of theplane of the machine front through the intervention of a connectingelement which serves as connecting rod and has one end in spacedrelationship to the pivot axis linked to the actuating lever and has itsother end linked to the turbine housing, the lever forming with theturbine housing a rigid pivotable unit during the pivoting movements ofthe turbine housing.

The pivot system according to the present invention has variousadvantages. Thus, by arranging the pivot axis within the region belowthe position of operation of the turbine housing, it will be assuredthat the housing will be pivoted substantially in a direction transverseto the direction of the axis of thespinning turbine. In this way it willbe possible that, already after the spinning turbine has been pivotedthrough only a relatively small pivot angle, the spinning turbine willbe freely accessible for a quick cleaning and for a quick exchangetogether with its bearing means. This way of exposing and makingaccessible of the spinning turbine is effected in a simple mannerinasmuch as by means of one actuating lever the turbine housing is firstwith drawn out of the range of the opening-up roller by a straight linemovement and isthen pivoted out of the plane of the machine front.

According to a further development of the invention, the outwardpivoting and the return pivoting of the tur bine housing can be furthersimplified by pressing the turbine housing in its position of operationby one or more spring means resting against the pivot axis and formingwith the turbine housing a pivot unit against the housing of theopening-up roller, while the actuating lever with its crank-forming partand the connecting element linked to the actuating lever and the turbinehousing and serving as connecting rod will,following the straigh lineadjustment of the turbine housing, be located below the guiding means onthe side of the outward pivot movement and will then be located in theregion of the outer dead center point of the crank drive. The springmeans arrestthe turbine housing in its position of operation on thehousing of the opening-up roller. No special manual operation isnecessary for the actuation of the arresting system. Theunlocking andarresting is taken care of by the pivoting of the actuating lever.

' Referring now to the drawings in detail, in the turbine housing 1 ofan open-end spinning machine, of which only those elements have beenshown which are important for explaining the invention, the spinningturbine 3 is by the bearing means 3a received from above and is arrestedin the turbine housing by means of a clamping device 4 (not shown indetail). In its position of operation i.e., in its spinning positionaccording to FIG. 1, the turbine housing which is open at the top isarranged adjacent the housing 7 for the opening-up roller 13, while theopening-up roller 13 which is coaxially arranged with regard to thespinning turbine extends into the latter from above.

For cleaning the spinning turbine 3 and for exchanging the spinningturbine with its bearing means 3a, it is necessary to expose the turbinehousing with its upper opening. In conformity with the presentinvention, the turbine housing has associated therewith a new pivotingsystem which in a simple manner permits to expose and make the turbinehousing easily accessible so that .a quick cleaning and quick exchangeof the spinning turbine with its bearing means will be assured.

More specifically, the turbine housing 3 is pivotable about a pivotshaft 2 which is located within the region below the position ofoperation of the spinning turbine and is pivotable toward the front outof the plane of the machine front M. A straight line or rectilinearadjustability of the turbine housing with regard to the pivot axis inthe direction of the axis of the spinning turbine 3 is provided. To thisend, l-bolts 5 are rotatably arranged on the pivot shaft 2. The turbinehousing 1 is by means of sleeves 5a rectilinearly guided in thedirection of the turbine axis on the I-bolts 5.

Between the heads of the l-bolts 5 and the sleeves 5a there are arrangedcompression springs 6 which press the turbine housing ,1, when thelatter occupies its position of operation shown in FIG. ll, against thehousing 7 of the opening-up roller l3 and arrests the turbine housing 1.

The outward and the return pivoting of the turbine housing 1 includingthe unlocking and locking on the housing 7 of the opening-up roller 13is effected solely by pivoting the actuating lever 9 about the pivotshaft 2. The lever is associated with the turbine housing 1 in such awaythat it is able to effect the straight line adjustment of the turbinehousing through the intervention of a crank drive and for purposes ofpivoting the turbine housing is arrestable on the crank drive.

More specifically, the arrangement is as follows. The crank disc 15 isrotatablyarranged on the pivot shaft 2. A hook serving as connecting rodhas one end thereof linked at T6 to the crank disc 15, whereas its otherend is linked at 17 to the turbine housing ii. The actuating lever 9 iswith regard to the pivot shaft 2 nonrotatably connected to the crankdisc 15. At the same time, however, it is pivotable in the direction ofthe pivot shaft 2. To this end, the actuating lever 9 has one endrotatably arranged on a plug sleeve 18 which in its turn is intangential direction firmly connected to the crank disc 35 by a spacermember 19.

As will be seen from FIG. 2, the actuating lever 9 is continuously urgedto turn relative to the plug sleeve 18 in the direction toward theturbine housing il by means of a tension spring 11 which is locatedbetween the actuating lever 9 and the crank disc and which has beenomitted in FIGS. 1 and 3 in order not unnecessarily to overload thesefigures. This arrangement is such that the actuating lever 9 during itspivoting movement from the position shown in FIG. I in counterclockwisedirection latches automatically into the recess I2 of the housing. As aresult thereof, the actuating lever 9 will with regard to the pivotshaft 2 be nonrotatably connected to the turbine housing 1.

The outward and return pivoting of the turbine housing is in conformitywith the pivoting system of the present invention effected in thefollowing manner. For

pivoting the turbine housing 1 out of its position of operation or outof its spinning position shown in FIG. 1, the actuating lever 9 ispivoted in counterclockwise direction. During this operation, theturbine housing is rectilinearly adjusted in downward direction alongthe guiding cams 8 by means of the above mentioned crank drive in thedirection of the arrow 2i. During this withdrawing movement, the guidingcams 8 act counter to a pivoting moment which acts in the direction ofthe outward pivoting direction and is caused by the springs 6. Thispivoting moment decreases as a result of the movement of the joint point16 toward the outer dead center point of the crank drive and at theinstant when the turbine housing leaves the guiding cams 8 equals zerofor all practical purposes.

After a certain pivoting angle, at which the turbine housing 1 has beenwithdrawn according to FIG. 3 to a point below the guiding cams 8 andthe joint point 26 has in the specific embodiment shown moved somewhatbeyond the outer dead center point, the actuating lever 9 will, due tothe tension spring ll, automatically latch into the recess 12 of thehousing. Lever 9 now forms with the turbine housing a rigid pivotingunit so that during a further pivoting of lever 9 the turbine housingwill be pivoted in the direction of the arrow 22 of FIG. 3.

During the return pivoting of the turbine housing the actuating lever 9remains locked in recess 12 until the turbine housing engages a rearabutment which in the specific embodiment shown is formed by the suctionhead 20. Thereupon, lever 9 is against the force of spring 11 pivotedout of the recess 12 and is pivoted in clockwise direction. Inasmuch asthe crank drive first operates in the region of the outer dead centerpoint, spring 6 will during the movement of the turbine housing onto theguiding cams 8 practically not exert a pivoting moment in the outwardpivoting direction.

Basically it is possible to arrange the devices which connect theturbine housing with the pivot shaft, when viewed in the longitudinaldirection of the machine, laterally of the devices which follow thespinning turbine. As will be evident in particular from FIGS. 1 and 3,an especially advantageous design of the invention consists inadjustably mounting the turbine housing 3 for adjustment in thedirection of the axis of the spinning turbine 3. This way of mountingthe turbine housing 1 is effected through the intervention of a pivotarm 24 which is cranked around the delivery system 23. The pivot axis iswithin the region below the delivery system 23 offset with regard to thedirection of the axis of the spinning turbine, when the latter is in itsposition of operation, toward that side which is remote from the planeof the machine front 14. Furthermore, the hook 10 serving as connectingrod is linked to that part 24a of the cranked pivot arm which facestoward the pivot shaft 2. The region below the spinning turbine orspinning turbine housing remains completely freely accessible.

A further advantage of the arrangement according to the presentinvention consists in that with the lateral pivoting the turbine housingis displaced simultaneously in downward direction whereby the turbinehousing reaches a level which is even more easily accessible forservicing.

Another advantageous design of the invention consists in that theguiding surfaces 8a of the guiding cams 8 arranged on the outwardpivoting side (arrow 22) extend parallel to the axis of the spinningturbine 3 when the latter is in its position of operation and parallelto the longitudinal axes of the I-bolts 5. The engaging surface 2a ofthe suction head 20 for the turbineho'using l is inclined downwardlyaway from the axis of the spinning turbine 3 when the latter is in itsposition of operation. During the straight line downward and-also duringthe upward adjustment, the turbine housing l is guided by means of theguiding cams 8 which are arranged on the outward pivoting side. In thisconnection the turbine housing with its abutment surface 25 associatedwith the suction head 20 is by a displacement parallel to itself liftedoff from the abutment surface 20a of the suction head or is brought intoengagement therewith. In this way a tight fit of the turbine housing onthe suction head will be assured.

It is, of course, to be understood that the present invention is, by nomeans limited to the specific showing in the drawings but also comprisesany modifications within the scope of the appended claims.

What is claimed is:

1. An openend spinning machine, which includes: a turbine housing openat its upper end, a spinning turbine journalled in said turbine housing,a housing means for an opening-up roller, said housing meansbeing'arranged above and closing up said turbine housing when saidturbine housing is in its position of operation, a'pivot shaft extendingin the longitudinal direction of said machine at a level lower than saidturbine housing, said turbine housing being movable relative to saidpivot shaft from a first position in which said turbine housing is inengagement with said housing means successively along a straight firstpath in the axial direction of said turbine housing and along a curvedsecond path around said shaft and vice versa, guiding means projectingfrom said housing means and extending in axial direction of said turbinehousing while slidingly engaging a portion of said turbine housing forguiding the same along said straight first path, crank drive meansconnected to said turbine housing, control lever means connected to saidcrank drive means and operable to cause said crank drive means to movesaid turbine housing away from said housing means along said first pathand to disengage said turbine housing from said guiding means, and meansresponsive to said turbine housing having disengaged said guiding meansat ber having one end portion pivotally connected to said I crank arm. I

3. A machine according to claim 2, whichincludes spring means supportedby said pivot shaft and operable in the position of operation of saidturbine housing to press said turbine housing against said housingmeans, said spring means forming; a pivotal unit with said turbinehousing.

4. A machine according to claim 1, in which said con trol lever meansand said crank drive means are kinematically so connected to each otheras to occupy their outer dead center position when said turbine housingis in its position of operation.

5. A machine according to claim 1, which includes a suction headarranged adjacent to and having an engaging surface thereof inengagement with said turbine housing when the latter is in its positionof operation, and in which at that side of the machine toward which theturbine housing is pivotable said guiding means includes a guidingelement having its guiding surface extending substantially parallel tothe axis of said turbine housing when the latter is in its position ofoperation, whereas said suction head surface which engages said turbinehousing when the latter is in its position of operation is inclined in adirection away from the axis of said turbine housing when the latter isin its position of operation.

6. A machine according to claim 5, in which said suction head is atleast approximately diametrically opposite said guiding element.

1. An open-end spinning machine, which includes: a turbine housing openat its upper end, a spinning turbine journalled in said turbine housing,a housing means for an opening-up roller, said housing means beingarranged above and closing up said turbine housing when said turbinehousing is in its position of operation, a pivot shaft extending in thelongitudinal direction of said machine at a level lower than saidturbine housing, said turbine housing being movable relative to saidpivot shaft from a first position in which said turbine housing is inengagement with said housing means successively along a straight firstpath in the axial direction of said turbine housing and along a curvedsecond path around said shaft and vice versa, guiding means projectingfrom said housing means and extending in axial direction of said turbinehousing while slidingly engaging a portion of said turbine housing forguiding the same along said straight first path, crank drive meansconnected to said turbine housing, control lever means connected to saidcrank drive means and operable to cause said crank drive means to movesaid turbine housing away from said housing means along said first pathand to disengage said turbine housing from said guiding means, and meansresponsive to said turbine housing having disengaged said guiding meansat the end of said first path to lock said crank drive means and toestablish a rigid connection between said turbine housing and saidcontrol lever to thereby permit movement of said turbine housing alongsaid second path about said pivot shaft.
 2. A machine according to claim1, in which said turbine housing has a crank arm pivotally supportingsaid turbine housing on said pivot shaft, and in which said crank driveincludes a crank disc rotatably connected to said pivot shaft and alsoincludes a connecting member having one end portion pivotally connectedto said crank arm.
 3. A machine according to claim 2, which includesspring means supported by said pivot shaft and operable in the positionof operation of said turbine housing to press said turbine housingagainst said housing means, said spring means forming a pivotal unitwith said turbine housing.
 4. A machine according to claim 1, in whichsaid control lever means and said crank drive means are kinematically soconnected to each other as to occupy their outer dead center positionwhen said turbine housing is in its position of operation.
 5. A machineaccording to claim 1, which includes a suction head arranged adjacent toand having an engaging surface thereof in engagement with said turbinehousing when the latter is in its position of operation, and in which atthat side of the machine toward which the turbine housing is pivotablesaid guiding means includes a guiding element having its guiding surfaceextending substantially parallel to the axis of said turbine housingwhen the latter is in its position of operation, whereas said suctionhead surface which engages said turbine housing when the latter is inits position of operation is inclined in a direction away from the axisof said turbine housing when the latter is in its position of operation.6. A machine according to claim 5, in which said suction head is atleast approximately diametrically opposite said guiding element.